It seems like going from 700 to 750 is A LOT more difficult and less common than going from 650 to 700.
Yes it is! I can't provide any solutions but I can tell you about things that worked for me!
1. Have a clear idea about how you're going to achieve that +750. After having scored a 710 (Q48 and V40), I decided to shoot for +760. The best way to do this was to maximize my quant score (51) and score 1 point more in verbal. A 51/41 split would have given me a 760, but I fell one point short in verbal and ended up with a 750! The point is - play at your strength and consolidate your weakness.
2. Due to fortunate turn of events, I was offered a job as a GMAT quant instructor by a prep firm in my city. I took the job and it helped me immensely. I told my colleagues and my students that I would be re-taking the test to score a +760. This gave me a sense of responsibility because I would be held accountable.
3. Take your time... But don't lose focus!
"Wherever you go, go with all your heart" - Confucius
1. How to Review and Analyze your Mistakes (Post by BB at GMAT Club)
2. 4 Steps to Get the Most out out of your CATs (Manhattan GMAT Blog)
My Experience With GMAT
1. From 650 to 710 to 750 - My Tryst With GMAT
2. Quest to do my Best - My GMAT Journey Log